Hello I think there`s a bug.
When the DataGrid width is bigger than screen , column header text is changed after been invisible.
Look in this video at the right last column
<iframe width="560" height="315" src="https://www.youtube.com/embed/NMvkOXRuspA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>